John p



7 Re. 15,761 J. F. ROSE AUTKKDMATIC BEARING ADJUSTER Feb. 12 1924.

Original Filed March 21. 1921 Reissued 12, 1924;

UNIT D STATES Re. 15,761 PATENT orncs.

d'OHN I. BOSE, OF DAVENPORT, IOWA, ASSIGNOB TO KIL-NOCK COMPANY, A. @0330- T! 01' ILLINOIS.-

auro uvrrc ammo a'niusrsn.

Original Io. 1358,13, dated Aprfl fi, 1983, Serial to. 453,938, filed larch 21, 1921. Application for reissue medAugast 15, 1923. Serial Io. 657,645.

To all whom it may concern:

Be it known that I, JOHN F. Rose a citizen of the United States, residing at bavenort, in the county of Scott and State of owa, have invented certain new and useful Improvements in Automatic Bearing Ad- 'usters, of which the following is a specication.

My invention relates to a device for automatically taking up the wear on bearing parts, and is particularly adapted for use in connection with automatically taking up the wear on a crank shaft and pitman connection in an internal combustion engine and the like. Of course, the invention is ca able of other uses where the automatic 'e-up of wear between operating parts is essential to the efiicient operation and life of those parts.

v One of the objects of the present invention is to provide an efiicient automatic takeup to compensate for wear on the wearing parts.

A further object of the invention is to rovide an automatic take-u to compensate or wear on bearing parts w erein the space for operating such a device is limited.

A further object ofv the invention is to provide a device of the character described which is simple in construction and eflicient in-o ration.

ass and other objects are obtained by providing a construction and an arrangement of the various parts in a manner hereinafterdescribed and particularly pointed out in the appended claims.

Referrin to the drawings, Fig. 1 is a side elevational view partly in section of a crank shaft and pitman connection bearing showin my improved automatic take-up mounts therein. Fig. 2 is a bottom plan view of Fig. 1. Fig. 3 is an enlarged detail view of the ad'u'sting nut or sleeve. igni is an enlarged ad'usting bolt, and

1g. 5 is an adjluhstable washer.

detail view of the claimed is particularly ada for use. in connection with automatica y taking up the wear on a'crank shaft and 'pitman connection and has particular reference to a conenlarged detail view of the e invention hereinafter described and.

struction in which the space in which, the crank shaft is operating is limited. In other words, the crank shaft and pitman connection is ordinarily encased in a crank shaft casing where the space between the.

wall of the crank shaft casing and the re volving parts of thecrank shaft and pitman connection is but a small fractional art of an inch and does not afford very much room for the provision of a, device for automatically takmg up the wear on these bearing split bearing bushing 11. Secured to the.

pitman 12 for forming the other half of the aring connection to the crank shaft 10 is a cap 13 which is rovided with In opposite sides thereof corresggp in lugs 14 0f the pitman 12. ese

provided with apertures 18 which are-adapted to register with correspondi a rtures 15 in the lugs 14 of the pitman he cap 1113 is further provided with a semi-circular semi circular flange portion 16 of the pitman 12 and is adapted to support and retain therein a semi-circular portion of thesplit bushing -11 in such a manner as to form a bearing for the crank shaft 10 when the cap is properly 'tioned on or secured to the pitman 12. H e meansordinari ly used to secure the cap 13 to'tl1e1pitman-12 on the shaft 10 are not adjusted automatically to-compensate for the wear between the shafts 10 and the bushing, and for this reason the bearing becomes loose and causes excess strain on the bearing parts, there y shortenin the life of the parts. As

17 on the to the ugs' are portion '19 correspondingfwith the previously pointe out, the space between the crank case and the revolving crank shaft and pitman is considerably limlted and will not permit the use of an ordinary means for taking up the wear on these parts. In this connection I have provided a novel form of construction of an automatically actuated take-up for takin up the wear on the bear-,.

ing parts. This evice is simple in construction and compact in form so that it occupies slightly more space than the ordinary nut' This construction comprises a bolt 20 provided with the screw threads 21 having a relatively lon pitch. One end of the bolt is provided with a head 22 having one portion thereof as shown at 23, cut off so as to abut against a shoulder 24 formed on the pitman 12. This prevents the bolt when in place from turnin with respect to the pitman. On the en of --the bolt opposite the head is an unthreaded portion 25 provided with a transverse aperture 26. The bolt 20 is secured in position in the aligned apertures 15 and 18 of the lu s 14 and 17, respectivel by a sleeve 27.

with threaded portion 21 of the bolt 20. The sleeve 27 is provided with a peripherally arranged flange 29 which is slightly spaced from one edge 30 thereof. Extending longitudinally through the flange 29 is an aperture 31. The aperture 31 18 adapted to engage one -end of a spiral spring 32. The

- spring 32 is mounted upon the sleeve 27 which centrally maintainsthe spring on the bolt. The other end of the spring is secured in an aperture 33 formed in an adjustable washer 34', which is mounted on the unthreaded portion 25 of the bolt 20. One side of the washer 34 is seated on the thread adjacent the unthreaded portion 25 of the bolt 20. The washer 34 is locked in relative ranging the s ring and sleeve in this manner my improve automatic -bearing adjuster may be used in connection with crank shaft bearings where the s ace between the crank shaft and crank sha case is limited.

From the above description, it will be seen that the washer 34 may be revolved in a direction to exert a torsional thrust on the spring 32, which in turn exerts a torsional thrust on the sleeve 27, and thereby automatically takes up the wear on these parts. It will be noted that the flange 29 is spaced from the face 30 of the sleeve 27 so that one end of the spring 32 extending through aperture 31 of the flange 29 will not be clamped between the flange. and the lugs 17 The sleeve 27 is interior y threaded, as shown at 28, for engagement of the cap 13 so as to prevent the rotation of the sleeve.

In the operation of the above described device, it will of course be understood that when the cap 13 is placed in position so that the apertures 15 and 18 of the pitman 12 and cap 13, respectively, register, and with the crank shaft 10 positioned between the split bushings 11, there is a space of substantially one-sixteenth of an inch, as shown at 37, between these bearing parts so that the wear on these bearing parts may be taken up by my improved device as wear ensues. When the bolt 20 is positioned in these apertures -15 and 18 of the lugs 14 and 17 respectively, the sleeve 27 is screwed on the threaded portion of the bolt so that the surface 30 thereof engages the outer surface of the lug .17. .One end of the spring 32 is then engaged in the aperture 31 with the re- 26 of the bolt, thereby securing the s eeve in position under a torslonal straln.

From the above construction it will be seen that by having the s rin surroundin the barrel of the sleeve 2 I have provide an automatically adjusting device which is very compact, simple and eflicient, and which will work within a very limited space and is especially adapted for use in connection with crank shafts and pitman constructions where the space between the crank .shaft casing and the crank shaft and pitman connection is limited.

While in the above specification I have described one embodiment which my invention -may assume in practice, it will of course, be understood that the same is ca able of modification and that modification may be made without departin from the spirit and-scope of the invention, as expressed in the following claims.

What I claim as my invention and desire to secure by Letters Patent is:

- 1. A device of the character described comprising a threaded bolt, a sleeve having an interiorly threaded bore arranged to receive said bolt, said bolt-having an unthreaded portion at one end thereof, an adjustable washer mounted on the unthreaded portion of said bolt, and a torsional spring mounted on said sleeve having one end connected to said sleeve and the other end thereof connected to said' washer, said sleeve extending substantially throughout all the coils of said spring, thereby supporting the coils thereof and imitin the space occupied by said spring and s eeve.

2. n a device of the character descrlbed, a threaded bolt havin an ogening extending transversel theret roug and adjacent the outer end t ereof, a sleeve having an interiorl threaded bore arranged to receive said 1: readed bolt, said sleeve having a radial flan on the peripheral wall thereof, an adjusta le washer having radial grooves on the upper face thereof, a torsion spring arran d to lie concentric with said sleeve on said bolt and engage said flange at one end andsaid washer at the other end, and a gin pro'ected through the opening in said olt an arranged to engage the grooves in said washer to normally prevent the rotation of said washer on said bolt.

3. 'A device of the character described comprising a threaded bolt, a sleeve having an interiorly threaded bore arranged to receive said bolt, and a torsional spring nected to said sleeve, said sleeve extending substantially throughout all'the coils of sai spring, and imitm the space occu ied by said slpring and s eeve, and means or connectin v t e other end of the spring with said bo and for locking the sleeve against removal from the bolt.

In testimony whereof I afiix mysignature.

JOHN F. ROSE.

thereby supporting the coils thereof 

